Remarkup should provide a way to embed an anchor in text, and later link to this anchor. This would be most useful in the case of Phriction documents. I could envision the syntax looking something like this:
#Anchor_Name#
I could later link to this anchor in the same document:
[[ #Anchor_In_This_Document ]]
or to an anchor in another document:
[[ SomeOtherDocument#Anchor_Name ]]
[[ SomeOtherDocument#Anchor_Name | please see the documentation here ]]